Typewriting machine



Aug. 14%, 1923. 11,464,818 E. L. HARMON ET AL TYPEWRITING MACHINE Original Filed Sept. 10, 1919 ZSheets-Sheet 1 fig/.1.

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TYPEWRITING MACHINE Original Filed Sept. 10, 1919 2 Sheets-Sheet 2 Witness GHQ an up Patented Aug, 314, 13233.

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EDWIN L. HARMON AND OTTO PETERMAN COMPANY, INLC.

CORONA TYPEWRITER on NEW YORK.

Application filed September 10, 1e1e;'seria1 no. 322,774. Renewed January 15,

To all. whom it may concern: j

Be it known that we, EDWIN L. HARMON, a citizen of the United States, and Orro PETERMANN, also a citizen of the United States, both -.residing in Groton county of Tompkins, and State of New Tork, have invented new and useful Improvements in Typewriting Machines, of which the following is a full and clear specification.

The object of this invention is to improve and simplify the type-bar action, as'more fully hereinafter set forth.

In the drawings- Fig. 1 is a vertical longitudinal sectional view of so much of a typewriting machine as'is necessary to illustrate our present in vention;

Fig. 2 is a front elevation thereof, partly broken away;

Fig. 3 is a detail vertical sectional view taken through the pivot of one of, the bellcranks or sub-levers.

- Referring to the drawings annexed by reference characters, 10 designates the usual sheet-metal key-levers-which are pivoted at their rear extremities to a transverse fulcrum-bar 11, the pivotal connections being provided by vertically slitting the bar 11 and providing each key-lever with a hooklike extremity 12 engaging in one of the slots, said slots being grouped according to the grouping of the key-levers and being closed at their upper ends as well as at their lower ends so as to thereby avoid the necessity of using pivot-pins. It will be understood that suitable s rings, as-27, will be used for normally. hol ing up the key-levers; and it will be also understood that fulcrumbar 11 will extend substantially entirely across the machine and be rigidly attachedto the frame thereof. It will be understood also that this fulcrum-bar will serve for the spacing-levers. and case-shift-levers as 'well as the aforesaidkey-levers.

At a. point between the fulcrum-bar 11 and the key-ends of the key-levers, these flat key-levers are spaced and vertically guided by a slotted plate 13 which at its endsis rigidly affixed to the side-walls, of the frame. The slots are, ofcourse, in fore"- and-aft alinement with. the slots in the fulcrum-bar 11 so as to cooperate therewith in accurately guiding the leversm their vertiment of the key levers,

' ing connected to the "nearly into contact) N, OF GROTON, NEW YORK, AOSIGNORS TO or escrow, NEW YORK, A CORPORATION rvrnwm'rme MACHINE.

cal movement. This comb-plate 13 is bent longitudinally at two points 14 and 15 to form a shelf 16 extending substantially entirely across the of this shelf extending upwardly to serve as a flange-like support 17 for the bellcranks or sub-levers 18, said flange 17 increasing in height from the center of the machine outwardly to provide an arcuate support for said bell-cranks 18.

A stop-bar 19 isafiixed to the front face of the flange 17 to restrict the upward inoveandeach key-lever is connected to the forward end of its companion Hell-crank 18 by means of a pivotal link 20, the other end of the bell-crank betype-bar as usual by a link 21. The link 20 is connected to the key-lever throughcthe medium of a forwardly-extending ear 22 formed integralmachine, the forward edge as slightly up-and-down to permit such adjustments to be made as will enable the link 20 to work with a minimum of friction and at the same time impart to the type-bar the desired movement. In this way we avoid the use of a turn-buckleeor other adjusting screws in the connection between the key-lever and the bell-crank.

The manner of supporting the bell-cranks on the upper edge of the flange 17 consists in vertically slitting the upper part of said flange to form upstanding ears 2 3 and then twisting each ear to different angles so as to bring its ,vertical flat faces in arallelism with the slots of the segment. ach ear is provided at its upper end with a hole for the receptionof the bell-crank pivot 24, this pivot being formed integral with the bellcrank by laterally displacing the metal thereof, as shown in Fig. 3. To hold each bell-crank to its ear 23, with its pivot properly inplace, we provide each bell-crank with an ear 25 springing from the upper and downwardly upon the opposite face of the ear 23,' the front end of this ear 25 lying lightly against the adjacent face of the ear 23 and coming into; contact (or with-the end of the integral pivot 24." In this way a very simple pivotal connection is provided between the bellvcrank and the upstanding ear of the comb-plate; a connection which .avoids the use of separate pivots or adjust- Y to the bell-crank-levers to hold the type bars and key levers in normal position. This arrangement affords a very simple and compact as well as easily-assembled mechanism for maintaining the same tension on all the type-bar actions irrespective of position in the type-basket, and a feature of special importance is that the springs 27 are not only of minimum length but are all of uniform length. A feature of special importance lies in combining the key-lever comb-plate 18, the fulcrum-support for the bell-cranks and the anchorage of the tension-springs 27 in a unitary structure, thereby tending to economy in manufacture as well as ease and accuracy in assembling.

The ends of the upstanding part 17 of the combined comb and fulcrum supporting plate are each provided with a rearwardlyextending flange 28 which is fastener]. by suitable screws 29 to the inner faces of the side-walls of the frame, and this anchorage to the side-walls is a very substantial one in view of the fact that at the points of anchorage this plate has a considerable width due to the fact that the fulcrum flange. 17 increases in width toward the end of the plate. It will be observed that all the parts mounted on this combined comb and fulcrum plate will be assembled thereon before it is fastened in the machine frame, thereby contributing greatly to ease of assembling, and by reason of the fact that the key-levercomb and the bell-crank-supporting-ears are formed upon a single plate accuracy in manufacture and adjustment will be-materially promoted.

The nature and scope of the invention having been thus indicated and its'preferred embodiment having, been specifically described, what is claimed as new is:

1. A combined key-lever guide and sublever support for type-bar actions comprising a metal plate having a downwardly bent portion slotted vertically at intervals to form a key-lever guide comb and having an upwardly bent portion provided with pivot ears for the sub-levers of a type-bar action.

2. A combined key-lever guide and sublever support for type-bar actions comprising a plate having a depending flange at one end slotted vertically at intervals to form a key-lever guide comb and having an upstanding flange at its other edge, said upstanding fiange being provided wlth integral upstanding ears along its upper edge twisted at an angle to the plane of the flange to form sub-lever supports.

3. In a .typewriting machine, a combined comb-plate and a bell-crank-lever-support consisting of a single plate bent downwardly to form a comb at its rear edge and bent upwardly at its forward edge to form a support for the bell-cranks.

4. In a typewriting machine, a plate extending across the machine and anchored rigidly to the sidewalls thereof. said plate having one edge bent downwardly and provided with slots to form a key-lever-comb and its other edge bent upwardly to. form a support for the sub-levers of the type-bar action.

5. In a typewriting machine, a plate extending across the machine and anchored rigidly to the side walls thereof, said plate having one edge bent downwardly and provided with slots to form a key-lever-comb and its other edge bent upwardly to form a support for the sub-levers of the type-bar action, and an anchorage flange for the springs of the type-bar action fastened -to an intermediate point on said plate.

6. In a typewriting machine, a main frame, and a sheet metal plate, extending transversely of the frame and rigidly held thereto, said plate having a downwardly bent portion and an upwardly bent portion extending transversely of the frame.- the clownwardly bent portion being provided with a series of vertical key-lever-guide slots, and said upwardly bent portion gradually increasing in height from the middle to the ends thereof and being provided with an arcuate series of integral upstanding pivot lugs twisted into planes at, an angle to the upwardly bent portion of the plate for supporting the sub-levers of a type-bar action.

7. In a typewriting machine, a transverse plate anchored to the frame of the machine at its ends and bent transversely to form a front upstanding flange and a rear downwardly turned flange formed into a keylever-comb, the intermediate part forming a shelf. bell-crank-levers of the type-bar action supported on said upstanding flange, said upstanding flange having an arcuate curvature. an anchorage flange fastened to said shelfand having its upstanding edge conforming to the arcuate arrangement of the bell-crank-su'pport. and springs con necting the bell-cranks to the curved upper edge of said flange.

8. A type-bar action assembly unit comprising a key-lever guide comb, a key-lever stop bar carried by thecomb, and a support for sub-levers carried by the comb.

9. A type-bar action assembly unit comprising a key-lever 'guide comb, sub-lever anchoring means for sub-lever return springs carried by the comb.

the ends of return forward edge levers with the type bars.

0. A key-lever guide comb and sub-lever support comprising a plate having a dependmg slots and an upstanding flange provided with pivot ears for supporting the sub-levers of a type-bar action, and an angular member having one web secured to the upper side of said plate ,and an upstandin web provided with apertures for receiving springs for the sub-levers.

11. A type-b ing a key-lever guide comb, a key-lever stop bar carried by the comb, upstanding sub-lever supports carried by the comb, and an anchoringmember for sub-lever return springs carried by the comb.

12. Ina typewriting machine, the combination of a frame, a type-bar segment supthe frame, a plate extending transversely of the frame forward of the segment and rigidly supported in the frame, a flange depending from the rear edge of said plate provided with key lever guide slots, a flange Y of said plate with an arcuate series of ears twisted laterally, key levers extending through the slots in the depending flange and fulcrumed in the frame, links connecting the key levers with the sub-levers, and links connecting the sub- 13. In a typewriting machine, the combination of a frame, a type-bar segment supported in the frame, a

transversely of the frame forward of the segment and rigidly supported in the frame,- a ange depending from the rear edge of forward flange provided with key-lever guide k ar action assembly compris- 1 with extending upwardly from the k and provided sub-levers pivotally held to said ears,

necting the subrlevers plate extending said plate provided with key lever guide slots, a flange extending upwardly from the edge of said plate and provided arcuate series of ears twisted latsub-levers pivotally held to said ears, ey levers extending through the slots in the depending flan e and fulcrumed in the frame, an upstan ing anchoring member held to said plate adjacent the rear edge of the plate and having an arcuate upper edge,

with an eralIy,

g springs connecting the sub-levers with the upper edge of said member, links connecting the key-levers with the sub-levers, and mks connecting the sub-levers with the type-bars...

14. a typewriting machine, the combination of a ported in the frame, a plate extending transversely of the; frame forward of the segment and rigidly supported in the frame, a flange depending from the rear edge of said plate provided with key lever guide slots, a flange extending upwardl from the forward edge of said plate an provided an arcuate series of ears twisted laterally, sub-levers ivotally held to said ears,

ey levers extending through the slots in the depending flange and fulcrumed in the frame, links connecting the key levers with the forward ends of the sub-levers, means connecting the rear ends of the sub-levers with the type-bars, an upstanding anchoring member held to the plate, springs conwith said member, and a key-lever stop bar held to the forward face of the/ upwardly extending flange on the plate and exten ing over the key levers.

This specification signed this 30th day of August, A. D. 1919.

' EDWIN L. HARMON. OTTO PETERMANN.

frame, a type-bar segment sup- 

